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【单选题】
急性低钾血症对心肌膜电位的影响是 电位(绝对值) 阈电位(绝对值) 电位与阈电位间差距
A.
↓ , 不变 , ↓
B.
↓ , ↓ , 不变
C.
.↓ , ↑ , ↓
D.
↑ , 不变 , ↑
E.
↑ , ↑ , ↑
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D.
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